The 2025 Ostra Group Open was a professional tennis tournament played on clay courts. It was the 22nd edition of the tournament which was part of the 2025 ATP Challenger Tour. It took place in Ostrava, Czech Republic between 28 April and 4 May 2025.
Singles main-draw entrants Seeds Country Player Rank1 SeedVít Kopřiva951Elmer Møller1142Adrian Mannarino1243Dalibor Svrčina1274Harold Mayot1605Coleman Wong1696Lukáš Klein1737Hady Habib1748 1 Rankings are as of 21 April 2025.
Other entrants The following players received wildcards into the singles main draw: Jan Jermář Jan Kumstát Maxim Mrva
The following players received entry from the qualifying draw: Petr Brunclík Norbert Gombos Max Houkes Àlex Martínez Rudolf Molleker Jelle Sels
The following player received entry as a lucky loser: Vitaliy Sachko
Champions Singles
Zsombor Piros def. Hady Habib 6–3, 6–2.
Doubles
Jan Jermář / Stefan Latinović def. Finn Reynolds / James Watt 7–5, 6–3.
References